Suppose not. That is, suppose that there is a least positive real number x. [We must reduce (a) ] Consider the number x/2. Since x is a positive real number, x/2 is also (b) . In addition, we can deduce that x/2 < x by multiplying both sides of the inequality 1 < 2 by (c) and dividing (d) . Hence x/2 is a positive real number that is less than the least positive real number. This is a (e)

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

y=x+9

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step-by-step explanation: